Cisco Systems 3750E Configuring a Power Management Mode on a PoE Port, Interface-id phy, 11-26

Chapter 11 Configuring Interface Characteristics

Configuring Ethernet Interfaces

	Command	Purpose
Step 6
	end	Return to privileged EXEC mode.
Step 7
	show controllers ethernet-controller	Verify the operational state of the auto-MDIX feature on the interface.
	interface-id phy
Step 8
	copy running-config startup-config	(Optional) Save your entries in the configuration file.

To disable auto-MDIX, use the no mdix auto interface configuration command.

This example shows how to enable auto-MDIX on a port:

Switch# configure terminal

Switch(config)# interface gigabitethernet1/0/1

Switch(config-if)# speed auto

Switch(config-if)# duplex auto

Switch(config-if)# mdix auto

Switch(config-if)# end

Configuring a Power Management Mode on a PoE Port

For most situations, the default configuration (auto mode) works well, providing plug-and-play operation. No further configuration is required. However, use the following procedure to give a PoE port higher priority, to make it data only, or to specify a maximum wattage to disallow high-power powered devices on a port.

Note When you make PoE configuration changes, the port being configured drops power. Depending on the new configuration, the state of the other PoE ports, and the state of the power budget, the port might not be powered up again. For example, port 1 is in the auto and on state, and you configure it for static mode. The switch removes power from port 1, detects the powered device, and repowers the port. If port 1 is in the auto and on state and you configure it with a maximum wattage of 10 W, the switch removes power from the port and then redetects the powered device. The switch repowers the port only if the powered device is a class 1, class 2, or a Cisco-only powered device.

Beginning in privileged EXEC mode, follow these steps to configure a power management mode on a PoE-capable port:

	Command	Purpose
Step 1
	configure terminal	Enter global configuration mode.
Step 2
	interface interface-id	Specify the physical port to be configured, and enter interface
		configuration mode.

	Catalyst 3750-E and 3560-E Switch Software Configuration Guide
11-26	OL-9775-02